Emerson 3000 Centrifugal Air-Cooled Condensing Units, Installing the Indoor Condensing Unit

Page 73

Split System Models

7.5Centrifugal Air-Cooled Condensing Units

7.5.1Installing the Indoor Condensing Unit

Refer to drawings for unit dimensions and component locations.

! WARNING

Risk of ceiling collapse and heavy unit falling. Can cause equipment and building damage, serious injury or death.

Verify that the supporting roof structure is capable of supporting the weight of the unit(s) and the accessories during installation and service. (See Table 30 - Indoor centrifugal condensing unit.)

Be sure to securely anchor the top ends of the suspension rods. Make sure all nuts are tight.

The indoor condensing unit is usually mounted above the ceiling and must be securely mounted to the roof structure. The ceiling and ceiling supports of existing buildings may require reinforcements. Be sure to follow all applicable national, state and local building, plumbing and electrical codes. Use field-supplied threaded suspension rods and 3/8"-16 factory hardware kit.

The indoor condensing unit must be located at the same level or above the Liebert Challenger 3000 unit. It must NOT be located below the Liebert Challenger 3000.

Recommended clearance between ceiling grids and building structural members is unit height plus 3 inches (76.2mm).

Install the four field-supplied rods by suspending them from suitable building structural members. Locate the rods so that they will align with the four mounting holes in the flanges that are part of the unit base.

Using a suitable lifting device, raise the unit up and pass the threaded rods through the four mounting holes in the flanges that are part of the unit base.

Attach the threaded rods to the unit flanges using the supplied nuts and grommets. (See Figure 35 - Detail of ceiling hanging bracket, Threaded Rod and Hardware Kit Installation). The rubber grommets provide vibration isolation.

1.Use the plain nuts to hold unit in place. Adjust these nuts so that the weight of the unit is supported evenly by the four rods, does not rest on the ceiling grid, and is level.

NOTE

The units must be level in order to operate properly.

2.Use the Nylock nuts to “jam” the plain nuts.

Table 30 Indoor centrifugal condensing unit

 

Model

Net Weight

 

 

 

60 Hz

 

50 Hz

lb (kg)

 

 

 

 

MC_40A

 

MC_39A

240 (109)

 

 

 

 

MC_65A

 

MC_64A

449 (204)

 

 

 

 

67

Liebert® Challenger 3000™

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Contents Liebert Challenger 3000 with Liebert iCOM Page Table of Contents Split System Models Chilled Water ModelsR407C Refrigerant FiguresTables Important Safety Instructions Liebert Challenger Important Safety Instructions System Descriptions Prop Fan Air-Cooled Split SystemsCentrifugal Fan Air-Cooled Water-CooledEquipment Inspection Room PreparationLocation Considerations Equipment HandlingHandling With Skid Unit net weightRemoval of Skid Model Lb. kgUpflow BU cabinet dimensions Floor Cutout Dimensions Drain Line Piping ConsiderationsPiping connection size Chilled Water Unit Connection Sizes-in Piping connections for air-cooled units Downflow modelsPiping connections for air-cooled units Upflow models Installation Applicable to all Models Condensate Pump Line 1/2 OD CU used only Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Installation Applicable to all Models Electrical Connections Facility Fluid and Piping MaintenanceHumidifier Supply Water-Optional Infrared Terminal Block For Customer Connectons Downflow Models with Liebert iCOM Upflow Models with Liebert iCOMBalancing the Air Distribution Plenum InstallationUnder-Floor Discharge Systems Ducted ApplicationsChecklist for Completed Installation Line Voltage Condenser LocationLow Voltage Air-cooled condenser statistics Common to all models. See below for key to a dimensionLiebert Lee-Tempheater 43-9/16 51-7/16Refrigerant Piping Equivalent lengths feet for various pipe fittings Recommended line sizes OD copper, inchesCondenser refrigerant per serial tag Variable Fan Speed Control Piping Fan Speed Control SystemsVariable Fan Speed Control Materials Supplied Variable Fan Speed Charging Fan speed suction pressure transducer settingsDPN000349 Rev DPN001726 Liebert Lee-Temp Piping Liebert Lee-Temp Leak Check and Evacuation ProcedureLiebert Lee-Temp Controlled Materials Supplied Liebert Lee-TempCharging Liebert Lee-Temp suction pressure transducer settings407C Factory Piping Optional Piping Field Piping DPN001725 Condenser Factory Piping Field Piping Factory Piping Water Regulating Valve AdjustmentMotorized Ball Valve-Digital Scroll Compressors Refrigerant control settings psi kPaManual Flushing ControlStartup Control MethodLocation Manual ControlDrycooler Location Drycooler InstallationPump and Drycooler General Guidelines Glycol PipingDry Bulb Wet Bulb Relative Dew Point Humidity Room dew point temperaturesFilling Instructions Volume in standard Type L copper pipingExpansion Tanks, Fluid Relief Valves and Other Devices Preparing the System for FillingEthylene glycol concentrations Glycol SolutionsFilling the System 43-3/16 43-9/16 110 5mm For expansion tank dimensions, see onSee Note 30-1/4 483mm 1097mmDrycooler data Mounting hole dimensional dataGlycol pump data Pump Pump Suction Pump Discharge Connection,Field Piping General arrangement-Glycol-cooled models with digital scroll Expansion Tank Field-Installed at Pressure Glycol Regulating Valve Testing Valve FunctionMotor Ball Valve-Digital Scroll Compressors Chilled Water Models WAY Valve Water/Glycol-Cooled Condensing Units Air-Cooled Condensing UnitsRefrigerant Loop R407C Charge Unit refrigerant chargeModel Lb kg Recommended refrigerant lines R407C sizes OD copper Line charges refrigerant per 100 ft m of Type L copper tubeLine coupling sizes Quick Connect Fittings Outdoor Air-Cooled Condensing Units Unit Dimensions See TablePFCZ42A-L PFCZ41A-L See Table Outdoor air-cooled condensing unit-top air discharge models36-1/4 38-1/2 Piping and electrical connections top air discharge152 Ton High Ambient Ton Quiet-Line Field-supplied unit disconnect switchModel Net Weight 60 Hz 50 Hz Lb kg MC40A MC39A Installing the Indoor Condensing UnitCentrifugal Air-Cooled Condensing Units Indoor centrifugal condensing unitAirflow CFM CMH DuctingPiping Connections DPN000207 Wire connections from evaporatorRev0 ModTon centrifugal air-cooled condensing unit dimensional data AIR Cooled Water Cooled Piping Considerations Water and Glycol-Cooled Condensing UnitsTon Connection Sizes Condenser Water RequirementsTon water/glycol-cooled condensing unit Glycol SystemsDPN000209 Ton water/glycol-cooled condensing unit dimensional data WATER/GLYCOL R407C Refrigerant Temperature Gauge Pressure Psig KPaCalculating Subcooling Temperature Pressure Gauge Psig KPaExample Page Ppor t Is t Ne tTwor k Care
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3000 specifications

The Emerson 3000 is a cutting-edge control system designed to enhance the efficiency, reliability, and precision of industrial operations. Employed across various sectors such as oil and gas, pharmaceutical, food and beverage, and power generation, the Emerson 3000 has gained recognition for its robustness and versatility.

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